<template>

  <div v-if="is_login" :style="loginstyle" class="login-container">
    <div :class="m">
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
        autocomplete="on"
        label-position="left"
      >

        <div class="title-container">
          <h3 v-if="m=='store'" class="title">商家后台登录</h3>
          <h3 v-else class="title">{{ sitesetup.ac.title || '系统管理后台登录' }}</h3>
        </div>

        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            ref="username"
            v-model="loginForm.username"
            placeholder="用户名"
            name="username"
            type="text"
            tabindex="1"
            autocomplete="on"
          />
        </el-form-item>

        <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
          <el-form-item prop="password">
            <span class="svg-container">
              <svg-icon icon-class="password" />
            </span>
            <el-input
              :key="passwordType"
              ref="password"
              v-model="loginForm.password"
              :type="passwordType"
              placeholder="密  码"
              name="password"
              tabindex="2"
              autocomplete="on"
              @keyup.native="checkCapslock"
              @blur="capsTooltip = false"
              @keyup.enter.native="handleLogin"
            />
            <span class="show-pwd" @click="showPwd">
              <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
            </span>
          </el-form-item>
        </el-tooltip>
        <el-button
          :loading="loading"
          type="primary"
          style="width:100%;margin-bottom:30px;"
          @click.native.prevent="handleLogin"
        >登录</el-button>
      </el-form>
      <div class="copyright" align="center"><span v-if="sitesetup.copyright">{{ sitesetup.copyright }}</span><a
        v-if="sitesetup.icp"
        href="https://beian.miit.gov.cn/"
        target="_blank"
      >{{ sitesetup.icp }}</a></div>
    </div>
  </div>

</template>

<script>
import {
  setToken
} from '@/utils/auth'
export default {
  name: 'Login',
  components: {},
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!value) {
        callback(new Error('Please enter the correct user name'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('The password can not be less than 6 digits'))
      } else {
        callback()
      }
    }
    return {
      sitesetup: {
        ac: []
      },
      loginForm: {},
      is_login: true,
      loginstyle: '',
      loginRules: {
        username: [{
          required: true,
          trigger: 'blur',
          validator: validateUsername
        }],
        password: [{
          required: true,
          trigger: 'blur',
          validator: validatePassword
        }]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      token: undefined,
      m: 'admin',
      otherQuery: {}
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        if (this.getQueryString('version') == '3') {
          this.is_login = false
        }
        if (this.getQueryString('m')) {
          this.m = this.getQueryString('m')
          if (this.m == 'store') {
            this.loginstyle = 'background-color: #0077AA;'
          }
        }

        const query = route.query
        if (query) {
          if (query.token) {
            this.is_login = false
            setToken(query.token)
            this.$router.push({
              path: '/'
            })
          }

          this.redirect = query.redirect
          this.otherQuery = this.getOtherQuery(query)
        }
      },
      immediate: true
    }
  },
  created() {
    // window.addEventListener('storage', this.afterQRScan)
  },
  mounted() {
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
    this.$api.post('/login/sitesetup', {
      i: this.getQueryString('i')
    }).then(res => {
      if (res.data) {
        this.sitesetup = JSON.stringify(res.data) == '[]' ? {} : res.data
        if (this.sitesetup.ac.title) {
          document.title = this.sitesetup.ac.title
        }
        if (this.sitesetup.ac.loginbgimg) {
          this.loginstyle = {
            backgroundImage: 'url(' + this.sitesetup.ac.loginbgimg + ')',
            backgroundRepeat: 'no-repeat',
            backgroundPosition: 'center top'
          }
        }
      }
    })
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    getQueryString(name) {
      var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i')
      var r = window.location.search.substr(1).match(reg)
      if (r != null) return unescape(r[2])
      return null
    },
    checkCapslock(e) {
      const {
        key
      } = e
      this.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          if (this.getQueryString('m')) {
            this.loginForm.m = this.getQueryString('m')
          }

          this.$store.dispatch('user/login', this.loginForm)
            .then(() => {
              this.$router.push({
                path: this.redirect || '/',
                query: this.otherQuery
              })
              this.loading = false
            })
            .catch(() => {
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== 'redirect') {
          acc[cur] = query[cur]
        }
        return acc
      }, {})
    }
    // afterQRScan() {
    //   if (e.key === 'x-admin-oauth-code') {
    //     const code = getQueryObject(e.newValue)
    //     const codeMap = {
    //       wechat: 'code',
    //       tencent: 'code'
    //     }
    //     const type = codeMap[this.auth_type]
    //     const codeName = code[type]
    //     if (codeName) {
    //       this.$store.dispatch('LoginByThirdparty', codeName).then(() => {
    //         this.$router.push({ path: this.redirect || '/' })
    //       })
    //     } else {
    //       alert('第三方登录失败')
    //     }
    //   }
    // }
  }
}
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg:#283443;
  $light_gray:#fff;
  $cursor: #fff;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }
  }
</style>

<style lang="scss" scoped>
  $bg:#2d3a4b;
  $dark_gray:#889aa4;
  $light_gray:#eee;

  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }

    .thirdparty-button {
      position: absolute;
      right: 0;
      bottom: 6px;
    }

    @media only screen and (max-width: 470px) {
      .thirdparty-button {
        display: none;
      }
    }
  }

  .store {
    height: 100%;
    width: 100%;

  }

  .copyright {
    color: #3e4856;
  }
</style>